package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.*;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.vo.OrderVO;
import com.sky.webSocket.WebSocketServer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Collectors;

@Slf4j
@Service
public class OrderServiceImpl implements OrderService {

    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private UserMapper userMapper;

    @Autowired
    private WeChatPayUtil weChatPayUtil;

    @Autowired
    private OrderDetailMapper orderDetailMapper;

    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private WebSocketServer webSocketServer;

    @Value("${sky.shop.address}")
    private String shopAddress;

    @Value("${sky.baidu.ak}")
    private String ak;

    @Override
    @Transactional(rollbackFor =RuntimeException.class)
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {
        //处理各种业务异常(地址pu为空,购物车数据为空)
        AddressBook addressBook = addressBookMapper.getById(ordersSubmitDTO.getAddressBookId());
        if (addressBook==null){
            //地址为空,抛出业务异常
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //检查用户或收货地址是否超出配送范围
        //checkOutOfRange(addressBook.getProvinceName()+addressBook.getCityName()+addressBook.getDetail());

        //查询购物车数据
        Long userId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = new ShoppingCart();
        shoppingCart.setUserId(userId);
        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);

        if (shoppingCartList==null|| shoppingCartList.isEmpty())
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        //向订单表插入一条数据
        Orders orders = new Orders();
        BeanUtils.copyProperties(ordersSubmitDTO, orders);
        orders.setOrderTime(LocalDateTime.now());
        orders.setEstimatedDeliveryTime(LocalDateTime.now().plusHours(1));
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        orders.setNumber(String.valueOf(System.currentTimeMillis()));
        orders.setPhone(addressBook.getPhone());
        orders.setUserName(addressBook.getConsignee());
        orders.setUserId(userId);
        orders.setAddress(addressBook.getProvinceName() +addressBook.getCityName()+addressBook.getDetail());
        orderMapper.insert(orders);
        //向订单明细表插入n条数据
        List<OrderDetail> orderDetails=new ArrayList<>();
        for (ShoppingCart cart : shoppingCartList){
            OrderDetail orderDetail = new OrderDetail();
            BeanUtils.copyProperties(cart,orderDetail);
            orderDetail.setOrderId(orders.getId());//订单id
            orderDetails.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetails);
        //清空当前用户购物车
        shoppingCartMapper.deleteByUserId(userId);
        //返回OrderSubmitVO对象
        return OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();
    }

     /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {

        this.paySuccess(ordersPaymentDTO.getOrderNumber());
        log.info("支付成功:{}", ordersPaymentDTO);
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));

        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Orders ordersDB = orderMapper.getByNumber(outTradeNo);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        orderMapper.update(orders);
            Map<String, Object> map=new HashMap<>();
            map.put("type",1);
            map.put("orderId",ordersDB.getId());
            map.put("content","订单号:"+outTradeNo);
            String jsonString = JSON.toJSONString(map);
            webSocketServer.sendToAllClient(jsonString);
    }

    @Override
    public void reminder(Long id) {
         // 根据订单号查询订单
        Orders ordersDB = orderMapper.getById(id);
        if (ordersDB==null){
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
         Map<String, Object> map=new HashMap<>();
            map.put("type",1);
            map.put("orderId",id);
            map.put("content","订单号:"+ordersDB.getNumber());
            String jsonString = JSON.toJSONString(map);
            webSocketServer.sendToAllClient(jsonString);
        // 通过socket发送消息
        webSocketServer.sendToAllClient(jsonString);
    }


    //转换为基本数据类型时值不能为null值,否则会报错,mysql会将Int转换为Integer数据类型
    @Override
    public PageResult historyOrders(int page, int pageSize, Integer status) {
        //设置页面信息大小
        PageHelper.startPage(page,pageSize);
        List<OrderVO> records = new ArrayList<>();
        //查询订单信息
        OrdersPageQueryDTO ordersPageQueryDTO = new OrdersPageQueryDTO();
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        ordersPageQueryDTO.setStatus(status);
        Page<Orders> OrdersPage=orderMapper.PageQuery(ordersPageQueryDTO);
        for (Orders orders:OrdersPage){
            //查询菜品详细信息
            Long orderId=orders.getId();
            List<OrderDetail> orderDetails=orderDetailMapper.selectByOrderId(orderId);
            //封装VO对象
            OrderVO orderVO=new OrderVO();
            BeanUtils.copyProperties(orders,orderVO);
            orderVO.setOrderDetailList(orderDetails);
            orderVO.setOrderDishes(getOrderDishesStr(orders));
            records.add(orderVO);
        }
        //封装PageResult对象返回
        return new PageResult(OrdersPage.getTotal(),records);
    }

    @Override
    public OrderVO getById(Long id) {
        OrderVO orderVO=new OrderVO();
        Orders orders=orderMapper.getById(id);
        BeanUtils.copyProperties(orders,orderVO);
        List<OrderDetail> orderDetails=orderDetailMapper.selectByOrderId(id);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    @Override
    public void cancel(Long id) {
        Orders orders=Orders.builder()
                .id(id)
                .status(Orders.CANCELLED)
                .cancelReason("用户取消")
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void cancel(OrdersCancelDTO ordersCancelDTO) {
           Orders orders=Orders.builder()
                .id(ordersCancelDTO.getId())
                .status(Orders.CANCELLED)
                .cancelReason(ordersCancelDTO.getCancelReason())
                .cancelTime(LocalDateTime.now())
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void repetition(Long id) {
        //获取订单信息
        Long userId=BaseContext.getCurrentId();
        List<OrderDetail> orderDetailList = orderDetailMapper.selectByOrderId(id);
        List<ShoppingCart> shoppingCartList=orderDetailList.stream().map(item->{
            // 将原订单详情里面的菜品信息重新复制到购物车对象中
            ShoppingCart shoppingCart = new ShoppingCart();
            BeanUtils.copyProperties(item, shoppingCart, "id");
            shoppingCart.setUserId(userId);
            shoppingCart.setCreateTime(LocalDateTime.now());
            return shoppingCart;
        }).collect(Collectors.toList());
        shoppingCartMapper.insertBatch(shoppingCartList);
    }

    @Override
    public OrderVO details(Long id) {
        OrderVO orderVO = new OrderVO();
        Orders orders =orderMapper.getById(id);
        BeanUtils.copyProperties(orders,orderVO);
        List<OrderDetail> orderDetails = orderDetailMapper.selectByOrderId(id);
        orderVO.setOrderDetailList(orderDetails);
        return orderVO;
    }

    @Override
    public PageResult conditionSearch(String number, String beginTime, String endTime, String phone, Integer status, Integer page, Integer pageSize) {
        PageHelper.startPage(page,pageSize);
        Page<Orders> ordersPage=orderMapper.conditionSearch(number,beginTime,endTime,phone,status);
        List <OrderVO> orderVOList = new ArrayList<>();
        for (Orders orders:ordersPage){
            OrderVO orderVO=new OrderVO();
            BeanUtils.copyProperties(orders,orderVO);
            String orderDishes = getOrderDishesStr(orders);
            orderVO.setOrderDishes(orderDishes);
            orderVOList.add(orderVO);
        }
        return new PageResult(ordersPage.getTotal(),orderVOList);
    }

    @Override
    public OrderStatisticsVO statistics() {
        OrderStatisticsVO orderStatisticsVO=new OrderStatisticsVO();
        orderStatisticsVO.setToBeConfirmed(orderMapper.countByStatus(Orders.TO_BE_CONFIRMED));
        orderStatisticsVO.setConfirmed(orderMapper.countByStatus(Orders.CONFIRMED));
        orderStatisticsVO.setDeliveryInProgress(orderMapper.countByStatus(Orders.DELIVERY_IN_PROGRESS));
        return orderStatisticsVO;
    }

    @Override
    public void complete(Long id) {
        Orders orders=Orders.builder()
                .id(id)
                .status(Orders.COMPLETED)
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void rejection(OrdersRejectionDTO orderRejectionDTO) {
          Orders orders=Orders.builder()
                .id(orderRejectionDTO.getId())
                .status(Orders.CANCELLED)
                .rejectionReason(orderRejectionDTO.getRejectionReason())
                .build();
        orderMapper.update(orders);
    }


    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        Orders orders=Orders.builder()
                .id(ordersConfirmDTO.getId())
                .status(Orders.CONFIRMED)
                .build();
        orderMapper.update(orders);
    }

    @Override
    public void delivery(Long id) {
        Orders orders=Orders.builder()
                .id(id)
                .status(Orders.DELIVERY_IN_PROGRESS)
                .build();
        orderMapper.update(orders);
    }

    /**
     * 根据订单id获取菜品信息字符串
     *
     * @param orders
     * @return
     */
    private String getOrderDishesStr(Orders orders) {
        // 查询订单菜品详情信息（订单中的菜品和数量）
        List<OrderDetail> orderDetailList = orderDetailMapper.selectByOrderId(orders.getId());

        // 将每一条订单菜品信息拼接为字符串（格式：宫保鸡丁*3；）
        List<String> orderDishList = orderDetailList.stream().map(x -> {
            return x.getName() + "*" + x.getNumber() + ";";
        }).collect(Collectors.toList());

        // 将该订单对应的所有菜品信息拼接在一起
        return String.join("", orderDishList);
    }

    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     */
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }
}
